None of the other overhead electrified railways seem to be having the same problem.
That's basically because they already have automatic tensioning systems. The Anglia main line doesn't, and they are spending millions replacing it at the moment.
Hopefully, the problems will be in a section that isn't done yet...
That's what it sounded like, according to Look East. Trouble is, I can't remember exactly where it was. Anyway, expresses are missing out Chelmsford and Stratford and local trains are generally running slow. Hopefully, they won't miss out Stratford next week!